Marcellus Formation, but the company pulled out of those leases in 2013. In 2012, the company sold its remaining assets in the Gulf of Mexico to W&T Offshore. In 2014, it sold its assets in Malaysia to SapuraKencana Petroleum Berhad for $896 million. In 2016, the company acquired 42,000 acres in the STACK formation of the Anadarko Basin from Chesapeake Energy for $470 million and sold its assets in Texas for $390 million. In February 2019, the company was acquired by Encana. Controversies Environmental record In early 2012, Newfield discovered potential violations of the Clean Water Act relating to possible unpermitted discharges of fill materials into certain wetlands and drainages in the Uinta Basin. In 2015, the company resolved these issues with the Environmental Protection Agency and paid a fine of $175,000. References 1988 establishments in Texas 2019 disestablishments in Texas Companies formerly listed on the New York Stock Exchange Non-renewable resource companies established in 1988 Non-renewable resource companies disestablished in 2019 1993 initial public offerings Defunct oil companies of the United States 2019 mergers and acquisitions American companies disestablished in 2019 American companies established in 1988